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package org.apache.juneau.rest.annotation;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;

import java.lang.annotation.*;

import org.apache.juneau.rest.*;

/**
 * Identical to {@link HasFormData @HasFormData}, but only checks the existing of the parameter in the URL string, not
 * URL-encoded form posts.
 * 
 * <p>
 * Unlike {@link HasFormData @HasFormData}, using this annotation does not result in the servlet reading the contents
 * of URL-encoded form posts.
 * Therefore, this annotation can be used in conjunction with the {@link Body @Body} annotation or
 * {@link RestRequest#getBody()} method for <code>application/x-www-form-urlencoded POST</code> calls.
 * 
 * <h5 class='section'>Example:</h5>
 * <p class='bcode'>
 * 	<ja>@RestMethod</ja>(name=<jsf>GET</jsf>)
 * 	<jk>public void</jk> doPost(<ja>@HasQuery</ja>(<js>"p1"</js>) <jk>boolean</jk> p1, <ja>@Body</ja> Bean myBean) {
 * 		...
 * 	}
 * </p>
 * 
 * <p>
 * This is functionally equivalent to the following code...
 * <p class='bcode'>
 * 	<ja>@RestMethod</ja>(name=<jsf>GET</jsf>)
 * 	<jk>public void</jk> doGet(RestRequest req) {
 * 		<jk>boolean</jk> p1 = req.hasQueryParameter(<js>"p1"</js>);
 * 		...
 * 	}
 * </p>
 * 
 * <h5 class='section'>See Also:</h5>
 * <ul>
 * 	<li class='link'><a class="doclink" href="../../../../../overview-summary.html#juneau-rest-server.Query">Overview &gt; juneau-rest-server &gt; @Query</a>
 * </ul>
 */
@Documented
@Target(PARAMETER)
@Retention(RUNTIME)
@Inherited
public @interface HasQuery {

	/**
	 * URL query parameter name.
	 */
	String name() default "";

	/**
	 * A synonym for {@link #name()}.
	 * 
	 * <p>
	 * Allows you to use shortened notation if you're only specifying the name.
	 */
	String value() default "";
}
